c++ ANSI、UNICODE、UTF8互转

字符编码转换

最新推荐文章于 2023-03-01 16:53:27 发布

转载最新推荐文章于 2023-03-01 16:53:27 发布 · 525 阅读

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本文提供了C++中ANSI、UNICODE及UTF-8编码之间互相转换的方法。通过几个具体函数实现不同编码间的转换，包括从ANSI到宽字符、从宽字符到ANSI、从UTF-8到宽字符以及从宽字符到UTF-8。

c++ ANSI、UNICODE、UTF8互转

    static std::wstring MBytesToWString( const char * lpcszString);
     static std:: string WStringToMBytes( const wchar_t * lpwcszWString);
     static std::wstring UTF8ToWString( const char * lpcszString);
     static std:: string WStringToUTF8( const wchar_t * lpwcszWString);

std::wstring KKLogObject::MBytesToWString( const char * lpcszString)
{
     int len = strlen(lpcszString);
     int unicodeLen = ::MultiByteToWideChar(CP_ACP, 0 , lpcszString, - 1 , NULL, 0 );
    wchar_t * pUnicode = new wchar_t[unicodeLen + 1 ];
    memset(pUnicode, 0 , (unicodeLen + 1 ) * sizeof (wchar_t));
    ::MultiByteToWideChar(CP_ACP, 0 , lpcszString, - 1 , (LPWSTR)pUnicode, unicodeLen);
    wstring wString = (wchar_t * )pUnicode;
    delete [] pUnicode;
     return wString;
}

std:: string KKLogObject::WStringToMBytes( const wchar_t * lpwcszWString)
{
     char * pElementText;
     int iTextLen;
     // wide char to multi char
    iTextLen = ::WideCharToMultiByte(CP_ACP, 0 , lpwcszWString, - 1 , NULL, 0 , NULL, NULL);
    pElementText = new char [iTextLen + 1 ];
    memset(( void * )pElementText, 0 , (iTextLen + 1 ) * sizeof ( char ));
    ::WideCharToMultiByte(CP_ACP, 0 , lpwcszWString, 0 , pElementText, iTextLen, NULL, NULL);
    std:: string strReturn(pElementText);
    delete [] pElementText;
     return strReturn;
}

std::wstring KKLogObject::UTF8ToWString( const char * lpcszString)
{
     int len = strlen(lpcszString);
     int unicodeLen = ::MultiByteToWideChar(CP_UTF8, 0 , lpcszString, - 1 , NULL, 0 );
    wchar_t * pUnicode;
    pUnicode = new wchar_t[unicodeLen + 1 ];
    memset(( void * )pUnicode, 0 , (unicodeLen + 1 ) * sizeof (wchar_t));
    ::MultiByteToWideChar(CP_UTF8, 0 , lpcszString, - 1 , (LPWSTR)pUnicode, unicodeLen);
    wstring wstrReturn(pUnicode);
    delete [] pUnicode;
     return wstrReturn;
}

std:: string KKLogObject::WStringToUTF8( const wchar_t * lpwcszWString)
{
     char * pElementText;
     int iTextLen = ::WideCharToMultiByte(CP_UTF8, 0 , (LPWSTR)lpwcszWString, - 1 , NULL, 0 , NULL, NULL);
    pElementText = new char [iTextLen + 1 ];
    memset(( void * )pElementText, 0 , (iTextLen + 1 ) * sizeof ( char ));
    ::WideCharToMultiByte(CP_UTF8, 0 , (LPWSTR)lpwcszWString, - 1 , pElementText, iTextLen, NULL, NULL);
    std:: string strReturn(pElementText);
    delete [] pElementText;
     return strReturn;
}